My new mobile which is less than 30days old ,Speaker is not working now this is for second time, all the settings are ok, Don't know what to do further ,…
Perform a factory data reset: https://www.nokia.com/en_int/phones/support/nokia-6-user-guide/reset-your-phone
If that doesn't resolve the issue, you may consider returning the phone.
It looks like you're new here. If you want to get involved, click one of these buttons!